矮壮素对油莎豆生理特性及内源激素含量变化的影响

Effects of Chlormequat on Growth and Endogenous Hormones Content of Cyperus esculentus

以油莎豆‘石研2号’(河南圆粒)为试材,在其结块茎前期,用不同浓度梯度依次为0(CK)、100、500、1 000、1 500、2 000mg·L^(-1)的矮壮素(CCC)进行喷施,测定油莎豆株高、叶片叶绿素含量、块茎的可溶性蛋白质和可溶性糖含量及内源激素含量,以研究植物生长调节剂矮壮素(CCC)对油料作物油莎豆生理特性及内源激素变化的影响。结果表明:矮壮素(CCC)施用浓度为500~2 000mg·L^(-1)时,均能显著降低株高(P<0.05),并且可以提高油莎豆叶片叶绿素含量,以及块茎的可溶性蛋白质、可溶性糖的含量,其中经2 000mg·L^(-1)的矮壮素处理后效果最佳,株高降低了34.39%,叶片叶绿素和可溶性糖含量显著提高(P<0.05),矮壮素(CCC)处理下油莎豆生长素(IAA)、赤霉素(GA3)、玉米素(ZR)均低于对照,脱落酸(ABA)含量高于对照,矮壮素(CCC)浓度与赤霉素(GA3)、玉米素(ZR)含量呈负相关性,与脱落酸(ABA)含量呈正相关性;矮壮素(CCC)会抑制内源激素生长素(IAA)、赤霉素(GA3)、玉米素(ZR)的合成,对脱落酸(ABA)有促进作用。综合分析表明,矮壮素(CCC)的浓度为2 000mg·L^(-1)时不仅可以使油莎豆抗倒伏,同时可以增强油莎豆的光合作用能力以及抗性。

In order to study plant growth regulator chlormequat chloride（CCC）on Lufthansa bean oil crop physiological characteristics and endogenous hormone changes,in the early stage of tuber growth of Cyperus esculentus,chlorocholine chloride（CCC）with the concentrations of 0（CK）,100,500,1 000,1 500,2 000mg·L-1 were sprayed on the leaves one time respectively to test plant height and the contents of chlorophyll and soluble sugar and endogenous hormones.The results showed that CCC with the concentration of 500-2 000mg·L-1 could decrease the plant height,improve the content of chlorophyll and soluble sugar.The effect of soil irrigation with 2 000mg·L-1 CCC was the best,the plant height decreased by 34.39%,the contents of chlorophyll and soluble sugar significantly increased.The plant type and quality were improved.CCC treatment with different concentrations,reducing the IAA,GA3,and ZR contents in the leaves,compared with the control;ABA content was higher than the control.GA3 and ZR content was negatively correlated with the concentration of CCC,and ABA content was positively correlated with the concentration of CCC.And CCC inhibited endogenous hormone IAA,GA3,ZR synthesis,and promote the ABA synthesis.Comprehensive analysis obtained chlormequat（CCC）at a concentration of 2 000mg·L-1,not only could the oil Lufthansa bean lodging,but also enhancing oil Lufthansa bean photosynthetic capacity and resistance.